riscv: fp: add missing __user pointer annotations
The __user annotations were removed from the {save,restore}_fp_state() function signatures by commit 007f5c35 ("Refactor FPU code in signal setup/return procedures"), but should be present, and sparse warns when they are not applied. Add them back in. This change should have no functional impact. Signed-off-by: Paul Walmsley <paul.walmsley@sifive.com> Fixes: 007f5c35 ("Refactor FPU code in signal setup/return procedures") Cc: Alan Kao <alankao@andestech.com> Reviewed-by: Christoph Hellwig <hch@lst.de>
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